1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { renderHook, act, waitFor } from '@testing-library/react';
import { useShellHistory } from './useShellHistory.js';
import * as fs from 'fs/promises';
import * as path from 'path';
import * as os from 'os';
import * as crypto from 'crypto';
vi.mock('fs/promises');
vi.mock('os');
vi.mock('crypto');
const MOCKED_PROJECT_ROOT = '/test/project';
const MOCKED_HOME_DIR = '/test/home';
const MOCKED_PROJECT_HASH = 'mocked_hash';
const MOCKED_HISTORY_DIR = path.join(
MOCKED_HOME_DIR,
'.gemini',
'tmp',
MOCKED_PROJECT_HASH,
);
const MOCKED_HISTORY_FILE = path.join(MOCKED_HISTORY_DIR, 'shell_history');
describe('useShellHistory', () => {
const mockedFs = vi.mocked(fs);
const mockedOs = vi.mocked(os);
const mockedCrypto = vi.mocked(crypto);
beforeEach(() => {
vi.resetAllMocks();
mockedFs.readFile.mockResolvedValue('');
mockedFs.writeFile.mockResolvedValue(undefined);
mockedFs.mkdir.mockResolvedValue(undefined);
mockedOs.homedir.mockReturnValue(MOCKED_HOME_DIR);
const hashMock = {
update: vi.fn().mockReturnThis(),
digest: vi.fn().mockReturnValue(MOCKED_PROJECT_HASH),
};
mockedCrypto.createHash.mockReturnValue(hashMock as never);
});
it('should initialize and read the history file from the correct path', async () => {
mockedFs.readFile.mockResolvedValue('cmd1\ncmd2');
const { result } = renderHook(() => useShellHistory(MOCKED_PROJECT_ROOT));
await waitFor(() => {
expect(mockedFs.readFile).toHaveBeenCalledWith(
MOCKED_HISTORY_FILE,
'utf-8',
);
});
let command: string | null = null;
act(() => {
command = result.current.getPreviousCommand();
});
// History is loaded newest-first: ['cmd2', 'cmd1']
expect(command).toBe('cmd2');
});
it('should handle a nonexistent history file gracefully', async () => {
const error = new Error('File not found') as NodeJS.ErrnoException;
error.code = 'ENOENT';
mockedFs.readFile.mockRejectedValue(error);
const { result } = renderHook(() => useShellHistory(MOCKED_PROJECT_ROOT));
await waitFor(() => {
expect(mockedFs.readFile).toHaveBeenCalled();
});
let command: string | null = null;
act(() => {
command = result.current.getPreviousCommand();
});
expect(command).toBe(null);
});
it('should add a command and write to the history file', async () => {
const { result } = renderHook(() => useShellHistory(MOCKED_PROJECT_ROOT));
await waitFor(() => expect(mockedFs.readFile).toHaveBeenCalled());
act(() => {
result.current.addCommandToHistory('new_command');
});
await waitFor(() => {
expect(mockedFs.mkdir).toHaveBeenCalledWith(MOCKED_HISTORY_DIR, {
recursive: true,
});
expect(mockedFs.writeFile).toHaveBeenCalledWith(
MOCKED_HISTORY_FILE,
'new_command', // Written to file oldest-first.
);
});
let command: string | null = null;
act(() => {
command = result.current.getPreviousCommand();
});
expect(command).toBe('new_command');
});
it('should navigate history correctly with previous/next commands', async () => {
mockedFs.readFile.mockResolvedValue('cmd1\ncmd2\ncmd3');
const { result } = renderHook(() => useShellHistory(MOCKED_PROJECT_ROOT));
// Wait for history to be loaded: ['cmd3', 'cmd2', 'cmd1']
await waitFor(() => expect(mockedFs.readFile).toHaveBeenCalled());
let command: string | null = null;
act(() => {
command = result.current.getPreviousCommand();
});
expect(command).toBe('cmd3');
act(() => {
command = result.current.getPreviousCommand();
});
expect(command).toBe('cmd2');
act(() => {
command = result.current.getPreviousCommand();
});
expect(command).toBe('cmd1');
// Should stay at the oldest command
act(() => {
command = result.current.getPreviousCommand();
});
expect(command).toBe('cmd1');
act(() => {
command = result.current.getNextCommand();
});
expect(command).toBe('cmd2');
act(() => {
command = result.current.getNextCommand();
});
expect(command).toBe('cmd3');
// Should return to the "new command" line (represented as empty string)
act(() => {
command = result.current.getNextCommand();
});
expect(command).toBe('');
});
it('should not add empty or whitespace-only commands to history', async () => {
const { result } = renderHook(() => useShellHistory(MOCKED_PROJECT_ROOT));
await waitFor(() => expect(mockedFs.readFile).toHaveBeenCalled());
act(() => {
result.current.addCommandToHistory(' ');
});
expect(mockedFs.writeFile).not.toHaveBeenCalled();
});
it('should truncate history to MAX_HISTORY_LENGTH (100)', async () => {
const oldCommands = Array.from({ length: 120 }, (_, i) => `old_cmd_${i}`);
mockedFs.readFile.mockResolvedValue(oldCommands.join('\n'));
const { result } = renderHook(() => useShellHistory(MOCKED_PROJECT_ROOT));
await waitFor(() => expect(mockedFs.readFile).toHaveBeenCalled());
act(() => {
result.current.addCommandToHistory('new_cmd');
});
// Wait for the async write to happen and then inspect the arguments.
await waitFor(() => expect(mockedFs.writeFile).toHaveBeenCalled());
// The hook stores history newest-first.
// Initial state: ['old_cmd_119', ..., 'old_cmd_0']
// After adding 'new_cmd': ['new_cmd', 'old_cmd_119', ..., 'old_cmd_21'] (100 items)
// Written to file (reversed): ['old_cmd_21', ..., 'old_cmd_119', 'new_cmd']
const writtenContent = mockedFs.writeFile.mock.calls[0][1] as string;
const writtenLines = writtenContent.split('\n');
expect(writtenLines.length).toBe(100);
expect(writtenLines[0]).toBe('old_cmd_21'); // New oldest command
expect(writtenLines[99]).toBe('new_cmd'); // Newest command
});
it('should move an existing command to the top when re-added', async () => {
mockedFs.readFile.mockResolvedValue('cmd1\ncmd2\ncmd3');
const { result } = renderHook(() => useShellHistory(MOCKED_PROJECT_ROOT));
// Initial state: ['cmd3', 'cmd2', 'cmd1']
await waitFor(() => expect(mockedFs.readFile).toHaveBeenCalled());
act(() => {
result.current.addCommandToHistory('cmd1');
});
// After re-adding 'cmd1': ['cmd1', 'cmd3', 'cmd2']
// Written to file (reversed): ['cmd2', 'cmd3', 'cmd1']
await waitFor(() => expect(mockedFs.writeFile).toHaveBeenCalled());
const writtenContent = mockedFs.writeFile.mock.calls[0][1] as string;
const writtenLines = writtenContent.split('\n');
expect(writtenLines).toEqual(['cmd2', 'cmd3', 'cmd1']);
});
});
|
